[mitmproxy][dirtyhack] Fixed version of flow.kill that really terminates the connections, rather just marking flows as killed

flowkill_addon.py

# Managed to workaround my problem via a dirty hack.
# Not quite good, but it works and solves my daily tasks.
class FlowKillFix:
    def kill_flow(self, flow):
        server = ctx.master.addons.get("proxyserver")
        conn = flow.client_conn
        handler = server.connections.get(conn.id)
        dropped = []
        if handler is not None:
            handler.close_connection(conn, False)
            dropped.append("client")
        
        conn = flow.server_conn
        handler = server.connections.get(conn.id)
        if handler is not None:
            handler.close_connection(conn, False)
            dropped.append("server")

        if len(dropped) > 0:
            ctx.log.alert(f"dropped {"-".join(dropped)} for {flow.request.url}")
        else:
            ctx.log.error(f"dropped nothing for {flow.request.url}")

    @command.command("flow.drop")
    def flow_drop(self, flows: Sequence[flow.Flow]) -> None:
        for f in flows:
            if isinstance(f, http.HTTPFlow):
                self.kill_flow(f)
            else:
                ctx.log.error(f"skipped non-http {f}")

addons = [FlowKillFix()]

keys.yml

# Kill focused flow by Ctrl+K with confirmation of operation by Enter
-
  ctx: ["flowlist","flowview"]
  key: ctrl k
  cmd: console.command flow.drop @focus